يتكون نسيج اللحاء في النباتات مغطاة البذور من أنابيب غربالية وخلايا مرافقة وخلايا برنشيمية وألياف ، والخلايا المرافقة هي خلايا برنشيمية ملاصقة للأنابيب...

Painting of North American porcupine ( Erethizon dorsatum):They inhabit much of North America between the Arctic Ocean and northern Mexico. Porcupines are found throughout most of Alaska and Canada, in the northern part of the Great Lakes region, all throughout the west and northeast regions of...

Painting of Sucrose loading into Phloem:It is mainly a mass flow phenomenon driven by a turgor gradirent in which Pholem Loading exerts the Push of the mechanism and uploading the Pull.The Seive element turgor at the source is generally higher than at the sink and the turgor difference sufficient...

Painting of View of part of the Pholem of a Black Locust tree

Painting of Plant Stem:A stem is one of two main structural axes of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence (flowers), cones or other stems etc. The internodes act as spaces that distance one...

Painting of Plant Stem:A stem is one of two main structural axes of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence (flowers), cones or other stems etc. The internodes act as spaces that distance one...

Painting of Plant Stem:A stem is one of two main structural axes of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence (flowers), cones or other stems etc. The internodes act as spaces that distance one...

Painting of Plant Stem:A stem is one of two main structural axes of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence (flowers), cones or other stems etc. The internodes act as spaces that distance one...

"Painting of Veins of plant leaves:The veins are the vascular tissue of the leaf and are located in the spongy layer of the mesophyll. They are typical examples of pattern formation through ramification. The pattern of the veins is called venation. The veins are made up of: · ··Xylem:...

"Painting of Veins of plant leaves:The veins are the vascular tissue of the leaf and are located in the spongy layer of the mesophyll. They are typical examples of pattern formation through ramification. The pattern of the veins is called venation. The veins are made up of: · ··Xylem:...

"Painting of Veins of plant leaves:The veins are the vascular tissue of the leaf and are located in the spongy layer of the mesophyll. They are typical examples of pattern formation through ramification. The pattern of the veins is called venation. The veins are made up of: · ··Xylem:...

Painting of Procambium: It lies just inside of the protoderm and develops into primary xylem and primary phloem. It also produces the vascular cambium, a secondary meristem.

Painting of Fibers of phloem:Phloem fibres are represented by the dead sclerenchyma fibres that are found in between the sieve tubes. They are meant only for providing mechanical support.

Vector Generated Image of Graphic draw for xylem appear its elements :In vascular plants, xylem is one of the two types of transport tissue, phloem being the other. The word "xylem" is derived from classical Greek (xylon), "wood", and indeed the best-known xylem tissue is wood, though it is...

Vector Generated Image of Sieve tube member,In plant anatomy, sieve vascular tissue tube elements, also called sieve tube members, are a type of elongated parenchyma cells in phloem tissue.

"Vector Generated Image of Vascular cambium in adult stem,The vascular cambium is a lateral meristem in the vascular tissue of plants. The vascular cambium is the source of both the secondary xylem (inwards, towards the pith) and the secondary phloem (outwards), and is located between these...

Painting of Aphid:Aphids, also known as plant lice (and in Britain as greenflies), are small plant-eating insects, and members of the superfamily Aphidoidea. Aphids are among the most destructive insect pests on cultivated plants in temperate regions. Natural enemies include predatory lady...

توضح الصورة تركيب نسيج اللحاء في شجرة الخرنوب ، و يتكون نسيج اللحاء في النباتات من أنابيب غربالية و خلايا مرافقة و خلايا برنشيمية و ألياف

يوضح الشكل تركيب نسيج اللحاء في النباتات مغطاة البذور ، حيث يتكون من أنابيب غربالية و خلايا مرافقة و خلايا برنشيمية و ألياف

مقطع عرضي في جذر نبات من ذوات الفلقة الواحدة يبين التركيب الداخلي للجذر

مقطع عرضي في جذر نبات من ذوات الفلقة الواحدة يبين التركيب الداخلي للجذر

مقطع عرضي في جذر نبات من ذوات الفلقة الواحدة يبين التركيب الداخلي للجذر

مقطع عرضي في جذر نبات من ذوات الفلقة الواحدة يبين التركيب الداخلي للجذر

مقطع عرضي في جذر نبات من ذوات الفلقة الواحدة يبين التركيب الداخلي للجذر ، و تكبير لمنطقة النخاع والتي توجد في مركز الجذر في ذوات الفلقة الواحدة

مقطع عرضي في جذر نبات من ذوات الفلقة الواحدة يبين تركيب الأسطوانة الوعائية في الجذر ، والتي تتكون من الدائرة المحيطية البريسيكل (المحيط الدائر) والنخاع والحزم...